I wonder why UDF was doing a synchronous write in there. In fact I wonderwhy it's writing the inode at all? extN doesn't do that. If for somereason it really does want to make the inode immediately reclaimable thensimply shoving it down into the /dev/hda1 pagecache should be sufficient(ie: what you did)..

hm.

So are you saying that the fs throughput is unaltered by this change,but that the side-effects which your workload has on the overallmachine are lessened?